afaik, most 3d printers work on g-code. most drawing packages do not produce gcode directly, and it is usual to export as an stl file into a 'slicer' which splits the object into layers and generates the gcode for the 3d printer. so, in openscad, you render the object (fn 6) and save as stl. Then open the stl file in the slicer for preparing the g-code, then feed the result to the printer. Many slicers can connect to the printer, others you can transfer the resulting gcode file by sd card/wifi/whatever.. The slicer also allows some alterations to the object, scaling, etc. wrt your error messages, it will be easier to diagnose the problem if you post your scad file here. the second warning will need resolution, the first often occurs if you have more than one object, for example. (a box and a lid, say) On 06/05/2022 11:38, Jan Öhman via Discuss wrote: > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org